Attachment for threshing-machines.



No. 760,515. PATBNTED MAY 24, 1904. J. B. BARTHOLOMEW.

ATTAGHMENT FOR THRESHING MACHINES.

APPLIOATION PILBD NOV.20,1895.

NO MODBL.

i X i UNITED STATES Patented May 24, 1904.

PATENT OFFICE.

JOHN B. BARTHOLOMEW, OF PEORIA, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO AVERY MAN UFAOTURIN G COMPANY, OF PEORA, ILLINOIS, A CORPORATIONOF ILLINOIS.

ATTA CHMENT FOR THRESHlNG-MACHINES.

SPECIFICATION forming part of Letters Patent No. '760,515, dated May 24,1904. Application filed November 20, 1895. Serial No. 569,'793. (Nomodel.)

To all wir/0771, 't may cancer-77,:

Be it known that I, JOHN B. BARTHLOMEW, a citizen of the United States,residing at Peoria, in the county of Peoria and State of Illinois, haveinvented certain new and useful Improvements in Attachments forThreshing- 'Machnes; and I do declare the following to be a full, clear,and exact description of the nvention, such as will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, and to the letters ofreference marked thereon,which form a part of this specification.

Figure 1 is a side elevaton of the forward 'portion of a threshing-machine having my im- `a simple, strong, and effective devicefor rigidly clamping the forward portion of the frame A of athreshing-machine or other vehicle to the forward wheels B, whereby themachine Will be steadied and held firmly in place on the forwardsupports.

My improved clamp or jack consists of a threaded rod or bar D, pivotallyconnected to the frame A, a movable member E, mounted loosely on saidrod and provided with means for engaging with the rim of the adjacentwheel B, and an Operating-nut F, tted on the threaded portion of the rodD and adapted to move the member E longitudinally thereof.

As shown, I preferably bend the upper end of the rod D to form an eye d,through which extends a staple or other suitable fastening device on theframe A, the object being to provide a loose joint between the upper endof the jack and the machine whereby the jack can be easily moved intoposition to engage means of a short sleeve e, adapted to fit loosely 'onthe rod or other member D, and terminate at their other (free) ends inlaterally-extending lugs e'. The member E is strengthened by a cross-bare", connecting the aforesaid bars near the lugs e'. The lugs e' aredesigned to fit under and bear snugly against the inner surface of therim of the wheel B, and, as shown in Fig. 4, the upper faces thereof arebeveled or inclined somewhat, so as to conforrn to the curve of the rim.i

The free threaded end of the loosely-hung rod D passes through thesleeve or guide e, and on such rod beyond the said sleeve is fitted aninternally-threaded Operating-nut F. One face of this nut F contactswith the adjacent end of the aforesaid sleeve or guide c, and as suchnut is turned in one direction the member E will be moved longitudinallyof the rod D toward the supported end of the latter.

it to follow and lie against the upper surface of the nut.

The operation of ny improvements may be briefly stated as follows: Whenthe ap paratus is not in working position or is being moved from placeto place, the jack can be swung up into the position indicated in dottedlines in Fig. 1, in which position it is sustained by reason of one ofthe lugs e' thereof resting on the upper surface of the platform a ofthe thresher or being engaged and supported by any suitable device. Whenit is desh-ed to firmly clamp the forward end of the machine to thewheels B, the jack is disengaged from its u1:perinactive position andthe nut F is turned sufliciently to allow the member E to move downwardand bring the lugs d thereof 'into a plane below that of the rim of thewheel B. The nut F is then turned in the oppositc direction to force themember E upwardly and bring the lugs e' into close contact with theinner surface of the rim of the wheel. The machine and wheels will thusbe securely locked in place and the oscillation and vibrations commonlyexperienced when the machine is running will be largely overcome.

I am aware that prior to my invention it has been proposed to providedevices for holding the wheels of threshing-machines stationary whilethe separating mechanism is in operation by locking them to the body ofthe frame or body of the machine.

In another respect the mechanism which I have shown differs from thoseheretofore proposed for holding the wheels of threshing-machinesstationary.

My devices can be advantageously used in connection with the frontwheels of a threshing-machine, and it is the front wheels and the axlewhich it is especially desirable should be held rigid and solid, becauseof the fact that the rapidly-rotating cylinder is almost immediatelyabove this axle and the numerous devices are close to this axle whichreceive power from the engine and transmit it to the parts which drivethe movable portions of the mechanism, such as the straw-table, thegrain-table, the band-cutting and feeding devices, &0. The front axle inthese machines is at its center pivoted to the frame above by the usualking-bolt, and between said bolt or pivot-and the ends of the axle thereis usually no connection with the main frame, this general feature ofconstruction being conventionally illustrated in Fig. 2 of the drawings.As a result when the machine is in operation the strain of theengine-belt and the vibrations resulting from the motions of the drivenparts not only tend to cause the thrcsher to roll the wheels around thefront axle, but also tend to Swing or rock the front end of the machinerelative to the front axle.

I arrange each of the looking devices D E so that it exerts a powerfulstrain almost in a direct vertical line, whereas in earlierconstructions within my knowledge for holding thresher-wheels the strainwas applied on lines approximating the horizontal. Consequently I canhold' the wheel much more firml y against rotation or vibration aroundits axis, and by expanding or elongating the base of its connection withthe wheel (as by placing the flanges or lugs e' e' suitably remote fromeach other) I can with the single upwardly-drawing screw firmly lock thewheel against rotation in either direction; but it will be at once seenthis powerful vertical pull between the wheel and the frame tends todraw the frame down upon that side. Therefore I combine with the lock oneither side of the machine means for resisting this vertical pull andwhich coact with the wheel-lock in such way that not only theabovedescribed endthat the machine shall be held in the proper levelposition and shall be so bound to the front axle that the strain istaken off from the central connection between the axle and the frame,and vibrations of the axle horizontally or vertically or vibrations ofthe thresher-frame relatively to the axle shall be overcome, as well asthe vibration of the wheels; but the purpose described of overcoming thepowerful up and down pull of either lock can be accomplished in otherways. By having a looking device D E secured to the side of the framepractically directly over the wheel a very short mechanism can be used,and it will hold the wheel against vibration around its axis withoutbeing subjected to the torsion which is experienced when a draft-rod isemployed which extends under the frame and is connected to it at somepoint closer to the center than that herein utilized for attachment.

It will be observed that the peculiar effectiveness of theherein-described holding device as a lock for preventing the rotationof, the wheels is incident to its being disposed substantially in thevertical plane of the wheel transverse to the axis and outside of theperiphery or rim of the wheel, so that the draft of the device upon thewheel is exerted in a direction directly outward from the axis of thewheel or substantially radial relative to the wheel.

What I claim is- A looking device for threshing machine wheels,comprising a wheel-engaging member having the frame E with theprojections or lugs e', e' adapted to engage the inner periphery of thewheel-rim at points at either side of the vertical axial plane of thewheel and the clamping device D adapted to have its upper end Secured tothe thrcsher-frame at a point above the wheel and having its loweradjustable end supporting the wheel-engaging frame E and adapted toadjust the said wheelengaging element relative to the thresherfrarne toeXert a powerful upward draft upon the said wheel and prevent itsrotation or oscillation about its axis, substantially as set forth.

In testimony whereof I afix my signature in presence of two witnesses.

JOHN B. BARTHOLOMEXV.

VVitnesses:

J. L. MCKITTRICK, EDWARD D. NORTHAM.

IIS

